Nouns

(n)nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippoa quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential“it looked like nothing I had ever seen before”, “reduced to nil all the work we had done”, “we racked up a pathetic goose egg”, “it was all for naught”, “I didn't hear zilch about it”

Adjectives

(s)null, voidlacking any legal or binding force“null and void”